[BUG] View Account link fails for EVM addresses

[sisyphusSmiling]

Problem

When funding an EVM address, the link to view the account is invalid. This is likely because the link is generated by appending to a prefix of https://testnet.flowdiver.io/account/, but flowdiver doesn't support viewing EVM addresses at these URLs.

Steps to Reproduce

1. Fund an EVM address
2. After success, click on the resulting "View Account" link
3. The link will lead to an invalid page

Acceptance Criteria

The faucet should differentiate between EVM & Flow account addresses and prepend the appropriate URL prefix. For EVM, that's currently https://evm-testnet.flowscan.io/address/